Hinge



, Patented Sept. 15, 1925. 1

UNITED STATE rum) J. ANDERSON, or nn'raorr, MICHIGAN.

s PATENT our! CE. i

amen" Application filed March 12, 1925. Serial No. 14,860.

To all whom it may concern:

Be it known that I, FRED J. ANDERSON, a citizen of the United States, residing at Detroit, in the county of Wayne andState of Michigan, have invented ,anew and useful Improvement inaHinge, of which the followingis a specification.

My inventionrelates to. a new and useful improvement in a hinge, and has for its object, the provision of a hinge which is normally springheldin closing position, and so arranged and, constructed as to exert a closin forceuponthedoor, to which attache which is constant at all times, irre-,

spective as to whetherthe door is closed, partly opened, or completely opened.

Another object of the invention is the: provision in aihinge, adapted for. mounting I manufacture,and highly eflicient in use.

Other objects will appear hereinafter.

The invention consists in the combinations and arrzu gements of parts hereinafter described and claimed.

TheQinvention will best understood from a. reference to the accompanying drawings which form a partofthis specification and in which,

Fig.-1 is a rear elevational view of the invention,

Fig. 2 .isa sectional view taken substantially online 22 of Fig. 1,

Fig.3 is an elevational view show ng the hinge in open position. 1

As shown in the drawings, the hinge comprises a pair, of co-operating leaves 7 and 8, one of which, is adaptedfor mountingv upon a stationary supporting surface, and the other'of which is adapted for being secured to the door, or. other swinging member,.withwhich'used. The leaf'7 is providedwith a pair of knuckles 9 and 10 which are adapted for positioning between knuckles 11 and- 12 formed on theleaf 8. Projected through the knuckles mentioned is a shaft 13, provided with nuts 14 and 15 at opposite ends, so as to secure the parts in co-operative position. Positioned upon the shaft 13 in embracing relation is a spiral spring 16, one end 17 of which is .angularly turned and engaged a recess formed in the'knuckle 9. Positioned rotatablyupon the shaft 13 is a collar 18 projecting outwardly-from which is a sleeve 19, which is provided, at" opposite sides, with spirallyarranged grooves 20 and 21. Pro

jected through the .shaft 13 is a pin 22,.the ends of which project beyond the periphery of the shaft 13 and engage in the grooves 20 and 21. The opposite end 23 of the spring 13 is angularly turned and engages in a, pocket formed in the collar 18. The

knuckle 11 is provided with a setscrew 24 which may be threaded into engagement with the shaft 13, soas to maintain the knuckle ll in fiXed relation to the shaft 13. The leaf 8, is secured to the supporting surface and consequently, in operation, re-

mains stationary. .When the door, which is secured to the leaf 7, is opened, the

knuckle 9 is'ca'u sed to rotate upon the shaft 13. This rotating of the knuckle 9 causes a windingof the spring 16, to produce a greater torque,,so that the tension, resulting from the wound arrangement of the spring,

is increased. As the leaf 7 is swung on the shaft18 1n respo-nseto the opening of the door, the increased tension, on account of the winding of the spring 16, will cause the' collar 18 to begin to'rot'ate. As the collar 18 rotates, the end 23 of the spring will moveinto closer relationto the end of the a spring 17 on account of the engagement of the projecting ends of the pin in theslots Z 20 and 21. This approach of the ends of thespring toward each other causes a compression of the spring, but in approaching, the tension of the spring 16 resulting from the increased winding, is released. Theincllnation of the grooves 20 and 21 1s determined by the increase in tension resulting from the increase in winding of the spring 16, this tension being dependent upon the size of the wires, or the material from which the wires of the spring 16 are made.

The inclination of the slots is such that the unwinding at the end 23 willbe constant with the winding the end 17, so that the position,-the collar 1 8' is moved into the said resilient means position shown in Fig; 3.

The torque of the spring 13 may be adjusted by rotating the shaft Q f esired position and then tightening the set screw 24:, inasmuch as the shaft 13, in rotating, carries with it the lower end 23 of the spring 16.

i h a h nge ee trueted i t ma n th e is PlW ile l ev ee wh e the e se ing presure exerted on the leaf 7 remains constant at all stages of movement of the i retat ly e t e s a e ati e y to he ee It w ll he ee e tha t angl f h lo s de r nes e P ePe t ne change of compression and torque. When the e l e h he ed th pe itie he in Fig.- 3, t e eeie re e e of he prin will have a tendency to assist in movin the leai 7. to closing position. Conse uent y, if the inclination oi the slots 21 an 20 is such as to permit an effective result from the com- P e s s, he nd. of th Spring w l i pening, t e d or, e at light y far her t an the e Th g diujstmen f t ements, h'ev venedee net e i e the principle but to be determined solely with the particular hinge in which the invention is used} The object of the invention is to P e de a hin e ih h eh the l s g t u is always ee etahh matter th i q'e r ul s em a Wi e t e se ies or a con pression of the spring,

I s 'el eved' hviee t at n min modifications. of the present invention mayhe a u h s, eeding the ha ,3, and threading the interior ofthe sleeve 19*; ev r; ei eh iner med 'fieetieh and changes are intended in; the; present inven; tion and are desired to be brought: within the scope of the appended claims.

Hav ng thus described my invention, what I claim as new and desire to secureby' Letterse Patent l, A hinge of'the class die scribed, cornp i ns a Pai o r l t y mev h a one being adapted for mou'ntingupon a staon 'i epne 'ties member end e t e adapted for mounting upon aswingable' member; pivot member for permitting the relative swinging'o fthe leaves; and resilient means'mounted on said pivotal member for normally moving said leaves into closin relative position, the closin strain produced being constant at 1 all positions oi relative movement of said leaves. a

2;. A hinge of the class, described comprising a pair ofl'eaves, one ofsaid" leaves being adapted for mounting on a stationary support, and the other being adapted for'mounting on a swingable member; a pivot memcollar mounted on said pivot member, the' opposite of, said spring being connected to said collar and movable 1n unlson therewith; a sleeve fixedly connected to said 001- lar and embracing said pivot member, said sleeve havingspiral ly arranged slots formed therein; a pin projected through said pivot member, diametrically thereof, and engagingat its opposite ends in said, slots, said spring being adapted for unwinding at one end, upon being wound at the opposite end.

' 3. A hinge of the class described comprising a pairof leaves, one of said leaves being adapted for mounting; on a. stationary sup? port,,andthe other being adapted fonmoun'ting on a swingablemember; a, pivot member for said leavesga spring mounted on saidi pivot member in enrbraci-iigrel-ation, one-end of said springbeing connected to said leaf, mounted on said s'wingable member and movable in unison with said leaf; a collar mounted on said pivot member, the opposite end of said spring; being} connected to saidcollar and movable in unison therewith; a sleeve fixably connected to: said collar and embracing said pivot member, said sleeve having spirally arranged slots formed there in; a projected through said pi vot member, diametrically thereof, and engaging at its opposite ends in said slots, said'spring being adapted for unwinding at one end upon; being wound at theopposite end; and means; for fixin'g saidpivot member against rotation.

4. A hinge of the class described comprising apairof' leaves, one of said leaves beingadapted for mounting on a stationary supportingmember and the; other being" adapted for mounting one, door; a pivot member for said leaves; a springnormally under tension for retaining said door in closed position, one end ofsaid spring be ng attached to one of-said leaves and rotatable therewith, the ot'her end being adapted for spiral movement on said pivot member, upon relative movementof said leaves, for maintaining a constant tension on saidspring irrespective as tothe relative position of said leaves.

5; hinge of the class described, comprising apairof leaves, one of said leaves being adapted forgmounting on a stationary supporting member, and the other beingadapted for mounting on a door; a pivot member ofor said leaves; a coljlaron said pivot member, adapted for longitudinal movement on said pivot member; means for effecting a rotation'of said collar upon long-i tudinal' movement on" said pivot member; a spring normally under tension-for retaining said door in closed position, one end of said taining a constant tension on said spring irspringbeing attached to one of said leaves respective as to the relative position of said androtatabletherewith, and the other end leaves. 10 being attached to said collar and movable In testimony whereof, I have signed the 6 therewith, said other end being adapted for foregoing specification.

spiral movement on said pivot member, upon relative movement of said leaves, for main- FRED J. ANDERSON. 

